If you look at your Renthal grips, they'll say just how thick they are. It'll be V29 or V32 on the thumb side.
As been mentioned, the difference is the outer diameter. You want thicker grips go with 32, narrow, go with 29.
IMO, 29mm is the way to go. I have 32mm Dual Compounds on my R1 now cause a local shop ****ed up my order and I don't really like them. Didn't want to go through the hassle of return/re-order, so I stuck with them.
On my R6 I have a set of 29mm Kevlars that I've had laying around for several months. Online vendor sent me the wrong Dual Compounds so they let me keep them and sent me the right set.
Seems I can't get any luck ordering these things. lol. Personally, I like the regular Dual Compounds better than the Kevlars, but to each his own.
Depending on what year it is, I'd say $1500-2000 or so. I want a Kendon but dont think I can afford one
It's a 2010 model, seen one that was a late 90s model (dual if I recall correctly) going for $2k, I LOL'd. If that were the case, I could get retail for mine. The range you listed is what I was thinking; I wouldn't sell that low though.
I sell and get Renthal grips. i am gonna be placing an order shortly for a bunch. Medium and Hards I think Whatever Gray is and black. Perfect for racers. Razor thin, last forever, and they are short so they don't hit the paement easily.
Otherwise, I've got plenty of the superbike pro-grip grips that feel similar, but are softer to the hand and are the correct length.